Specification of diffusers AKWATECH GJ HD 270
  

Diffuser body:
 1. material: polyamide with 30% of glass fibre
2. diameter: 270mm
Fastening on pipe system:
 1. External thread R ½''
2. Fixing band PP with internal thread R ½" on pipes with diameter: 50, 63, 90, 110 mm
Description of diaphragm:
 1. Material: EPDM
2. thickness: 1,9 mm
3. active surface: 300 cm²
Bubble size:
 1,8 or 2,1 mm
Working temperature:
 +5°C to 80°C
Pressure loss:
 <30-40 hPa for air flow at 1-6 m³/h
Pressure loss at the end of the lifetime:
 <65 mbr for air flow at 6 m³/h
Guarantee for oxygen transfer in clean water:
 17gO2/(m³N x depth in m.)
Recommended air flow:
 4 m³N/h
Min. air flow:
 1 m³N/h, or completely switched off
Max. air flow:
 momentary up to 8 m³/h (10min)
Lifetime:
 Till 8 years in residental sewage treatment plants, depending on sewage constitution and terms of operation
Type of sewage:
 residential
Notice:
 Diffuser has received the certificate